Algebraic Analysis of Zero-Hopf Bifurcation in a Chua System

Abstract

This article first studies the stability conditions of a Chua system depending on six parameters. After, using the averaging method, as well as the methods of the Gröbner basis and real solution classification, we provide sufficient conditions for the existence of three limit cycles bifurcating from a zero-Hopf equilibrium of the Chua system. As we know, this last phenomena is first found. Some examples are presented to verify the established results.

Computational Technology for the Basis and Coefficients of Geodynamo Spectral Models in the Maple System

“…This allows flexibly control of the accuracy of computations and identification of zero coefficients even with numerical integration. CAS are intensively used in research in various fields of mathematics [32][33][34][35][36][37], physics [31,[38][39][40][41][42], engineering [43], education [44], and other areas.…”

“…The expression (36) for the coefficient a T kn is calculated and written to the variable U symbol in symbolic form with an undefined eigenvalue.…”